.upload-section {
    padding: 30px;
    border: 2px dashed #ddd;
    border-radius: 10px;
    text-align: center;
    background-color: #f8f9fa;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}
.upload-section.dragover {
    background-color: #e3f2fd;
    border-color: #2196f3;
}
.card {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}
.file-list {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,.05);
    max-height: 400px;
    overflow-y: auto;
}
.file-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}
.file-item:last-child {
    border-bottom: none;
}
.file-item:hover {
    background-color: #f8f9fa;
}
.file-name {
    flex: 1;
    margin-right: 10px;
    font-size: 0.9rem;
}
.file-size {
    color: #6c757d;
    font-size: 0.8rem;
    margin-right: 10px;
}
.file-status {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 12px;
    min-width: 80px;
    text-align: center;
}
.status-pending {
    background-color: #e3f2fd;
    color: #1976d2;
}
.status-success {
    background-color: #e8f5e9;
    color: #2e7d32;
}
.status-error {
    background-color: #ffebee;
    color: #c62828;
}
.remove-file {
    color: #dc3545;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}
.remove-file:hover {
    background-color: #ffebee;
}
.upload-progress {
    height: 4px;
    background-color: #e9ecef;
    border-radius: 2px;
    margin-top: 5px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background-color: #4a90e2;
    width: 0;
    transition: width 0.3s ease;
}
.btn-outline-danger:hover {
    background-color: #dc3545;
    color: white;
}